Megan Fox is an Instagram newbie, but she already has a knack for taking selfies. The star shared her first Instagram self-portrait -- and her second post to the site overall -- in July 2014, telling her fans that although the photo was captured in the early morning without makeup, she definitely used a filter.

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No makeup, no problem: Stars show off natural beauty13 photos

Zooey Deschanel shared a #nomakeup and #nofilter self-portrait on Twitter in May 2014. "Good morning!" she cheerfully posted.

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No makeup, no problem: Stars show off natural beauty13 photos

Actress Lupita Nyong'o posted a photo of herself without makeup lounging in a New York hotel in March 2014.

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No makeup, no problem: Stars show off natural beauty13 photos

Gwyneth Paltrow also posted an Instagram picture of herself sans makeup in March 2014.

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No makeup, no problem: Stars show off natural beauty13 photos

Singer Lorde posted a makeup-less selfie on her Instagram account in February 2014 with the caption "In bed in Paris with my acne cream on."

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No makeup, no problem: Stars show off natural beauty13 photos

Talk-show host Bethenny Frankel tweeted a picture of herself without makeup in February 2014. "This is my 'it's Monday' face, which looks very similar to my 'I'm exhausted and it's only Monday' face," she wrote.

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No makeup, no problem: Stars show off natural beauty13 photos

Jessica Simpson appeared in the May 2010 edition of Marie Claire magazine without makeup or retouching, the magazine said at the time. "I don't have anything to prove anymore," Simpson told the magazine. "What other people think of me is not my business." When the magazine published, a debate ensued as to whether touch-ups were in fact applied to her photos, but Simpson was adamant that the photo was legit.

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No makeup, no problem: Stars show off natural beauty13 photos

Little Monsters and the world got yet another unexpected surprise when Lady Gaga ditched her outrageous style to reveal her "natural" self In the October 2011 issue of Harper's Baazar. She told the magazine, "Whether I'm wearing lots of makeup or no makeup, I'm always the same person inside."

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No makeup, no problem: Stars show off natural beauty13 photos

Jennifer Love Hewitt posted this photo of herself makeup-free with the tweet "No make up pic for my lovelys!" Her fan Leonardo Milevich posted a response: "This only prove[s] the kind of great woman you are. Hugs for you."

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No makeup, no problem: Stars show off natural beauty13 photos

Jessica Biel has forged a reputation of going out with little to no makeup. She told People: "There's a vulnerability to being photographed without having your eyes defined or your eyebrows filled in, but I don't wear a lot of makeup in my personal life. I find that men, in my past, have preferred me without it. They always said, 'No, take that off.' "

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No makeup, no problem: Stars show off natural beauty13 photos

Snooki posted a photo of herself without makeup last year on Twitter, and she was showered with positive responses from fans for her fresh-faced look. "Why do you always put on so much makeup? You don't need to! You're gorgeous," posted Brianna Nicole Romagnano on Snooki's Facebook page.

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No makeup, no problem: Stars show off natural beauty13 photos

Amanda Seyfried is known for her fresh-faced look. She told People: "When I wake up in the morning and I don't have any makeup on, I don't feel ugly. I just feel clean."